update test value

Author: aelligp

test/test_GMT.jl

@@ -2,13 +2,13 @@ using Test
 using GeophysicalModelGenerator, GMT
 
 Topo = import_topo(lat=[30,31], lon=[50, 51] )
-@test sum(Topo.depth.val) ≈ 2773.3734999999997
+@test sum(Topo.depth.val) ≈ 2777.5705
 
 Topo = import_topo([50,51, 30,31]);
-@test sum(Topo.depth.val) ≈ 2773.3734999999997
+@test sum(Topo.depth.val) ≈ 2777.5705
 
 test_fwd =  import_GeoTIFF("test_files/length_fwd.tif", fieldname=:forward)
 @test  maximum(test_fwd.fields.forward) ≈ 33.17775km
 
 test2 =  import_GeoTIFF("test_files/UTM2GTIF.TIF")
-@test   test2.fields.layer1[20,20] == 105.0
+@test   test2.fields.layer1[20,20] == 105.0